Journal ArticleDOI
Cochannel Interference in Nonlinear QPSK Satellite Systems
D. Kennedy,O. Shimbo +1 more
Reads0
Chats0
TLDR
The effects of cochannel interference on the bit error rate of a QPSK satellite system are analyzed and the non-Gaussian nature of the interference and the small-signal suppression which may occur for uplink interferers are investigated.Abstract:
Increased frequency reuse in satellite systems will result in increased levels of cochannel interference. Such interference can in fact become the limiting factor affecting system performance. In this paper, the effects of cochannel interference on the bit error rate (BER) of a QPSK satellite system are analyzed. A nonlinear satellite transponder having a specified AM-AM and AM-PM transfer characteristic is assumed. An arbitrary number of up- and downlink interferers is considered. The theoretical results are compared with results obtained from time-domain computer simulations. Two facets of the cochannel interference problem which are of particular interest are investigated: the non-Gaussian nature of the interference and the small-signal suppression which may occur for uplink interferers.read more
Citations
More filters
Journal ArticleDOI
A bibliography on nonlinear system identification
TL;DR: The present bibliography represents a comprehensive list of references on nonlinear system identification and its applications in signal processing, communications, and biomedical engineering.
Journal ArticleDOI
A New Baseband Linearizer for More Efficient Utilization of Earth Station Amplifiers Used for QPSK Transmission
H. Girard,K. Feher +1 more
TL;DR: In this article, a new baseband linearizer is proposed to improve the effective radiated power of the earth station high-power amplifier with respect to the characteristics of the recommended INTELSAT V satellite simulator model.
Journal ArticleDOI
On the efficient use of computer simulated digital signals to evaluate performance parameters
E.L. Pinto,J.C. Brandao +1 more
TL;DR: The design of symbol sequences to be used in quasi-analytical simulation to estimate performance parameters of digital transmission systems is considered and an efficient method for including the effects of external interfering signals in the evaluation of error probabilities is presented.
Journal ArticleDOI
Adjacent channel and cochannel interferences in CPFSK systems with nonlinear transmitters and limiter-discriminator detection
TL;DR: The performance of continuous-phase FSK (frequency-shift keying) systems with rectangular modulation pulse shaping and limiter-discriminator detection is analyzed in the presence of transmission nonlinearities as well as adjacent channel and cochannel interference.
Proceedings ArticleDOI
Cochannel uplink interference in PN spread QPSK satellite systems
TL;DR: In this article, the effect of a bandpass limiter in code division multiple access quadriphase shift keying (QPSK) satellite spread spectrum communication systems is investigated, and the case of a cochannel interferer on the uplink is analyzed in detail.
References
More filters
Journal ArticleDOI
Effects of intermodulation, AM-PM conversion, and additive noise in multicarrier TWT systems
TL;DR: In this paper, the intermodulation due to the traveling-wave tube (TWT) is analyzed for the case where arbitrarily modulated carriers and Gaussian noise are amplified through the TWT.
Journal ArticleDOI
Error rate considerations for coherent phase-shift keyed systems with co-channel interference
TL;DR: The usefulness of the results presented in this paper is that the designer can have at his disposal very simple expressions with which to evaluate the performance of any given Coherent Phase-Shift Keyed system when the received signal is corrupted by both interference and random gaussian noise.
Journal ArticleDOI
Band-pass nonlinearities
TL;DR: A simple method for analyzing the effect of a nonlinearity sandwiched between band-pass filters, applying it to the case of weak signals when both filters pass the same band of frequencies, and obtaining completely general expressions for the output signal and noise.
Journal ArticleDOI
PSK error performance with Gaussian noise and interference
TL;DR: A single, constant amplitude, in-band, additive interference is included in the analysis of detecting phase shift keyed signals in gaussian noise, applicable to any M-phase system.
Journal ArticleDOI
Error Performance of Multiphase DPSK with Noise and Interference
TL;DR: The error performance of binary DPSK transmission for the case of noise and general cochannel interferences is considered to include multiphase signaling and the uncertainty in the approximation is small enough to make the results quite usable for systems design.
Related Papers (5)
Cochannel interference estimation for M-ary PSK modulated signals
Simulation of cochannel interference in coexisting cellular TDMA networks
M. Kocaturk,S.C. Gupta +1 more